所謂「金口」，是指君王所說的話是說什麼就成真，顯示帝王的神奇性及天命所歸的象徵。在民間流傳諸多有關劉秀、朱元璋、陳有諒、羅隱等人的金口傳說，呈現庶民百姓對歷史人物的評論或褒貶，也顯示民間對君王人品的認知與價值觀。
The called realization speech is the words of monarch will come true, showing the magical of monarch and the symbol of destiny. The spread of the legend of realization speech about Liu Xiu, Zhu Yuanzhang, Chen Youliang and Luo Yin in the folk. Both of showing the people to the historical personage's comment or the appraisal, and shows the folk to the monarch's cognition and the value.
